<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2007-2422</journal-id>
<journal-title><![CDATA[Tecnología y ciencias del agua]]></journal-title>
<abbrev-journal-title><![CDATA[Tecnol. cienc. agua]]></abbrev-journal-title>
<issn>2007-2422</issn>
<publisher>
<publisher-name><![CDATA[Instituto Mexicano de Tecnología del Agua, Coordinación de Comunicación, Participación e Información]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-24222020000100315</article-id>
<article-id pub-id-type="doi">10.24850/j-tyca-2020-01-08</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Assessment of superabsorbent polymer effect on water use efficiency of plant under water deficit conditions]]></article-title>
<article-title xml:lang="es"><![CDATA[Evaluación del efecto del polímero súper absorbente en la eficiencia del uso del agua de la planta en condiciones de déficit de agua]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zinivand]]></surname>
<given-names><![CDATA[Naser]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Khodadadi-Dehkordi]]></surname>
<given-names><![CDATA[Davoud]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Kashkuli]]></surname>
<given-names><![CDATA[Heidar Ali]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Asareh]]></surname>
<given-names><![CDATA[Ali]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Egdernezhad]]></surname>
<given-names><![CDATA[Aslan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Islamic Azad University Department of Water Engineering and Sciences ]]></institution>
<addr-line><![CDATA[Ahvaz ]]></addr-line>
<country>Iran</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Islamic Azad University Department of Water Engineering and Sciences ]]></institution>
<addr-line><![CDATA[Ahvaz ]]></addr-line>
<country>Iran</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Islamic Azad University Department of Water Engineering and Sciences ]]></institution>
<addr-line><![CDATA[Ahvaz ]]></addr-line>
<country>Iran</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Islamic Azad University Department of Water Engineering and Sciences ]]></institution>
<addr-line><![CDATA[Ahvaz ]]></addr-line>
<country>Iran</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Islamic Azad University Department of Water Engineering and Sciences ]]></institution>
<addr-line><![CDATA[Ahvaz ]]></addr-line>
<country>Iran</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2020</year>
</pub-date>
<volume>11</volume>
<numero>1</numero>
<fpage>315</fpage>
<lpage>341</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-24222020000100315&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-24222020000100315&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-24222020000100315&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Deficit irrigation is an optimum technique for producing products under drought stress conditions. The superabsorbent hydrogel is a hydrophilic polymer with cross-linked 3-D hydrophilic nets that is able to absorb and retain effective amounts of water and aquatic liquids. The objective of this study was to assess the superabsorbent polymer effect on water use efficiency (WUE) and grain yield of Vigna unguiculata L. under drought stress conditions. The experimental treatments included: treatment I1S0, including 100% ETc demand as irrigation amount and with 0.0 g SAP (I1:100% - S0: without SAP); Treatment I2S1, including 75% ETc demand as irrigation amount and with 7.0 g Super-AB-A300 polymer for plant (I2:75% - S1:7 g SAP); Treatment I3S2, including 55% ETc demand as irrigation amount and with 14.0 g Super-AB-A300 polymer for plant (I3:55% - S2:14 g SAP). Irrigation was performed by a drip irrigation system. According to the results, the soil treated with superabsorbent polymer, in mild deficit irrigation treatment (I2S1), made it possible to obtain the same grain yield as the complete irrigation treatment (I1S0) and there was no significant difference between them. Besides, IWUE was conversely depended on the entire water requirement all along the growing cycle, and for higher IWUE, the water would be decreased under the irrigation demand for the maximum grain yield. Thus, the mix of mild deficit irrigation and superabsorbent polymer (I2S1), that leads to increase the plant water productivity (AWP), was an acceptable policy to optimize cowpea grain yield and water utilization.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El riego deficitario es una técnica óptima para producir productos en condiciones de estrés por sequía. El hidrogel súper absorbente es un polímero hidrofílico con redes hidrófilas tridimensionales reticuladas que es capaz de absorber y retener cantidades efectivas de agua y líquidos acuáticos. El objetivo de este estudio fue evaluar el efecto del polímero súper absorbente sobre la eficiencia del uso del agua (WUE) y el rendimiento de grano de Vigna unguiculata L. en condiciones de estrés por sequía. Los tratamientos experimentales incluyeron: tratamiento I1S0, integrada la demanda de 100% de ETc como cantidad de riego y con 0.0 g de SAP (I1: 100%; S0: sin SAP); tratamiento I2S1, que contiene una demanda de 75% de ETc como cantidad de riego y con 7.0 g de polímero súper-AB-A300 para planta (I2: 75%; S1: 7 g SAP); el tratamiento I3S2, que incluye una demanda de 55% de ETc como cantidad de riego y con 14.0 g de polímero súper-AB-A300 para planta (I3: 55%; S2: 14 g SAP). El riego se realizó mediante un sistema de riego por goteo. De acuerdo con los resultados, el suelo tratado con polímero súper absorbente &#8213;en tratamiento de riego con déficit leve (I2S1)&#8213; hizo posible obtener el mismo rendimiento de grano que el tratamiento de riego completo (I1S0) y no hubo diferencias significativas entre ellos. Además, a la inversa, IWUE dependía de todo el requerimiento de agua a lo largo del ciclo de crecimiento, y para un IWUE más alto, el agua se reduciría bajo la demanda de riego para el rendimiento máximo de grano. Por lo tanto, la combinación de riego con déficit moderado y polímero súper absorbente (I2S1), que lleva a aumentar la productividad del agua de la planta (AWP), fue una política aceptable para optimizar el rendimiento del grano de caupí y la utilización del agua.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Deficit irrigation]]></kwd>
<kwd lng="en"><![CDATA[grain yield]]></kwd>
<kwd lng="en"><![CDATA[soil water content]]></kwd>
<kwd lng="es"><![CDATA[riego deficitario]]></kwd>
<kwd lng="es"><![CDATA[rendimiento de grano]]></kwd>
<kwd lng="es"><![CDATA[contenido de agua en el suelo]]></kwd>
</kwd-group>
</article-meta>
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